| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] [adj] it [is] | 738 |
|
| 2 | [Wh adv] [adj] it [is] | 692 |
|
| 3 | [Wh adv] difficult it [be] | 117 |
|
| 4 | [adv] difficult it [is] | 106 |
|
| 5 | [Wh adv] difficult [pron] [is] | 83 |
|
| 6 | [Wh adv] difficult it [is] | 80 |
|
